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CRC32 Checksum

Calculate standard CRC-32 checksums from UTF-8 text in hex or decimal.

CRC32 Checksum
Local input
Output
Processing…
Processed locally in your browserNo input history is saved
About this tool

Made for the task at hand.

Compute the widely used CRC-32/ISO-HDLC value with polynomial 0xEDB88320, including the standard initial and final XOR values. Text is encoded as UTF-8 before processing.

How to use

  1. Enter the text whose UTF-8 bytes you want to check.
  2. Choose hexadecimal or decimal output.
  3. Copy the checksum for a data-integrity comparison.
Your work stays yours.
Tool inputs are processed locally in your browser and are never sent to KitVerse servers. Clear the workspace when using a shared device.
Common questions
What is the CRC32 of 123456789?

The standard CRC-32/ISO-HDLC check value is 0xCBF43926, which is useful for verifying the implementation.

Is CRC32 a cryptographic hash?

No. CRC32 detects accidental changes but is easy to manipulate deliberately. Use a cryptographic hash for adversarial integrity.

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